For questions specifically about issues with battery charging or power supply.

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2
votes
3answers
2k views

My Nexus 4 says it's charging but it's actually discharging

I plug in my Nexus 4 to a charger cable plugged into a wall outlet each night, and each morning I disconnect it. But sometimes during the day when it's not plugged in, like today, it says "Charging - ...
5
votes
4answers
7k views

Nexus 7 says it's charging but it isn't

I have had a Nexus 7 since September and today something strange happened. I plugged it in, as usual, to recharge the battery. It charged up to 36% and now it still says it's charging but it never ...
0
votes
1answer
75 views

A Bad Charger Damaged My Asus TF300t Tablets

I bought a charger set off of Amazon.When i plugged it into my tablet it flashed and rebooted and the battery shows 0% and will not charge.Also when i hook up the USB charger the computer does not see ...
2
votes
3answers
4k views

How long device has been running since last charge?

In Android Lollipop, how do I see how long it has been since the last time I charged the battery? I mean I can get the approximate time by eye-balling the graph shown in Settings -> Battery. But, is ...
233
votes
6answers
59k views

Does constant charging harm my Android cellphone?

I usually disconnect my cellphone from the charger some time after it's fully charged because I'm afraid the battery could lose capacity over time if I don't. However, I believe modern electronics ...
1
vote
0answers
36 views

How do I test to see if a battery is good?

I have had such a nightmare with sprint. I'm not going into all the details but I ordered a battery for my htc 3d phone. I just want to get it up and running. I lost 10 days worth of texts and ...
2
votes
4answers
10k views

Why can't I charge a Samsung phone?

I use a dual-port 2-amp charger with an Amazon Basics USB cable. This works perfectly fine to charge my Nexus 4 and the Nexus reports "AC" not "USB" as charging mode. From the recharge time it's also ...
6
votes
2answers
3k views

How can I restore the display of the battery status on the lockscreen?

I have a Samsung Galaxy Fit - GT S5670 model. When I charge the battery, there used be a percentage on the pattern screen. Somehow it is not showing now. All it is showing the word "Charging" but no ...
0
votes
2answers
30 views

My Galaxy Tab 3 requires a cable so what can I use as a substitute?

Is it ok for me to charge my galaxy tab 3 using a samsung phone charger?(only the cable is from the phone, the jack is of the tab)
1
vote
1answer
39 views

S3 mini switches off randomly

My S3 mini switches off when I use social media or browse internet, then won't switch on until I have put it on charge but then it has 75% battery, just comes off charge and then the same thing ...
0
votes
1answer
47 views

Car charging at >500mA

I've plugged the AC charger for my Samsung Galaxy S4 into an inverter connected to my car's DC outlet. The inverter is able to power my laptop AC adapter without issues. The S4 charges, but not at ...
0
votes
1answer
57 views

my phone glaxey s4 had its screen crashed and Ive changed it and now it wont charge

My Samsung Galaxy S4 keeps showing the message "Charging paused. Battery temperature is too low", whenever I plug the phone into a charger. I've tried using a different charger and even another ...
0
votes
1answer
130 views

Samsung galaxy 3S, battery is good, phone won't charge or power up

I have a samsung galaxy 3S, about a week ago it rebooted itself, since then it will won't charge or turn back on, I have tested the battery to see if it was that, the battery works perfect, I have ...
0
votes
4answers
104 views

Nexus 4 charging/uncharging while plugged in

I have a problem when charging my Nexus 4, I tried looking around to no avail. My problem is that when I have my phone plugged in to charger it doesn't charge, Instead it flickers between charging ...
1
vote
2answers
517 views

Phone is too flat to charge

My phone died today, and now it won't charge at all on the charger it came with. I don't think the battery has failed, as it still gives me just as much charge on a full charge as always. The phone is ...
0
votes
0answers
83 views

HCL ME TAB V1-i used 5.5v charger for 5V, its not switching on!

I used a 5.5 V,0.66A charger for my HCL ME V1 Tab which had an in box charger of 5V, 2A. After that it is not switching on or charging. The On light is still glowing. Did i kill my tab? Someone ...
5
votes
4answers
2k views

Battery meter went crazy and now stays at 0%

I have a Samsung Galaxy Discover that worked fairly well until the last week or so. I ran the device down down to 0% - at which point the device shut off. I performed a full recharge and then ...
1
vote
0answers
45 views

How can I prevent battery saver from disabling when the device is charging?

The battery saver functionality in Android 5.0 and 5.1 automatically turns itself off when the device is "charging". Unfortunately, when I'm charging my tablet from my car, most of the time the charge ...
1
vote
0answers
238 views

Customizing charging animation in Asus Zenfone 5

I recently rooted my Asus Zenfone 5. When I looked at the system files using ES, I found that the animation used while charging the phone, when it is charging. I was wondering if I would ruin the ...
0
votes
3answers
473 views

How to check if my battery is OK?

I use my phone mainly for wifi use and I know it is a battery hog. However, what I would like to know is how much time it takes for the battery to charge. I guess it is supposed to take like 4 mins to ...
2
votes
1answer
256 views

Is slow charging bad for the battery?

I know that charging the battery too fast can overheat the battery and shorten battery life. But is charging it slowly, e.g. from a USB 2.0 cable plugged to a laptop, also harmful for the battery? I ...
2
votes
2answers
4k views

How can I make my Lenovo ThinkPad tablet charge up faster?

It takes a very long time (half a day) to charge up with a USB 2.0 charger plugged in the wall outlet.
1
vote
1answer
445 views

How to get rid of “Battery not charging dialog”?

I have a Sony Xperia ZR phone with Kitkat 4.4.2 and when I watch HD movies on non-MHL TV connected to the phone using a HDMI-miniUSB cable with external power source auxiliary cable, I often see a ...
2
votes
1answer
15k views

First battery charge on new tablet?

I got yesterday a Galaxy Tab 3 and I want to be sure what's the best way for the first battery charge. On the shop, they told just turn it on, wait for the battery to finish and then charge it to 100% ...
0
votes
1answer
327 views

Sprint Samsung Galaxy S3 Dropped phone now it won't power on or charge

I have a Sprint Samsung Galaxy S3 (SPH-L710) worked fine until I dropped it. After I picked it up the phone shut off, I tried removing/reinserting the battery, it would go to the Samsung logo, ...
0
votes
1answer
99 views

Without switching on, charger lights turns ON when phone gets connected?

It's kinda bad day today as i dropped my phone into a water for 5 sec. Phone turned on & I tried to clean it. Since the battery gets low, i plugged the charger cable to my phone. Without ...
0
votes
1answer
161 views

Nexus 5 with android 5.1 has battery life issue

I have Nexus 5 with android 5.1. The phone is fully discharged per day. Although I only make a few calls per day. How to fix it without downgrade to adnroid 5?
1
vote
0answers
204 views

How do I stop the “Connected as Installer” when connecting to computer? (LG G3 Lollipop)

When I connect my LG G3 running Lollipop to my Mac, the phone connects as an installer. The Verizon Mobile finder window pops up and my phone notifies me it's connected as an installer. I have ...
14
votes
5answers
13k views

Disable USB charging

For some reasons not related to the battery life, I need to disable the battery charging when a USB host is connected to my phone (a rooted Nexus 4). Taking a look around on the internet (link1, ...
1
vote
3answers
4k views

Nexus 4 wont charge or turn on; LED is blinking red

I've been charging my Nexus with the original charger for 2 hours. It still shows red LED light when I hold the power button. I've tried everything: Different USB chargers Holding the volume button ...
1
vote
1answer
1k views

How can I disable usb charging on Android phone (Nexus 5)

I use my Nexus 5 as development device, so I plug-in and plug-out into computer usb very often. What makes me worried is that too many this way "li-on" battery charging cycles get wasted too fast. My ...
0
votes
0answers
95 views

Why my phone malfunctions (like it unlocks itself , it just keeps responding to nothing) when i use a cheap charger?

I have been given a mobile phone charger and was asked to find out its defects and fix them. And what i found out is: When i connect it with any android touch phone it charges that phone(not a ...
4
votes
1answer
4k views

Looking for a consistent answer about battery calibration

This forum is full of questions about battery calibration. The thing is, that either I'm blind or one answers contradicts others. In particular: For example forums says, that battery should be ...
0
votes
0answers
612 views

Verizon Note 4 battery drain after Lollipop Update

I just had my Verizon Samsung Galaxy Note 4 upgraded to Lollipop 5.0.1 two days ago. I have not been able to get the battery fully charged since then. It charges extremely slowly. When charging ...
1
vote
0answers
88 views

Android device with USB HUB and Charge

I have a Chinese android tablet with MTK8392. It has only 1 micro USB port. The OTG function is working well, I can use a special USB keyboard with OTG. Is there ANY way to use this USB keyboard AND ...
2
votes
1answer
208 views

How can I turn off the notification for the power plug connection?

My Samsung Galaxy S3 with Android 4.1 plays a sound every time I connect it to the power plug. Is there a way to turn that off without affecting all other notifications?
2
votes
1answer
1k views

Where is the battery animation called?

I have a tablet from China, it's a Q8H Allwinner. It is rooted, and I've browsed the internal storage for hours to find the battery animation, I found them at framework-res.apk... Now I want to find ...
0
votes
0answers
124 views

Why won't my tablet charge fully after continuous use of a different charger?

My Android tablet had a charger with output 5.0V 2000mA. Of course, it got damaged and I found another charger that suits the size. Its output was 5.0V 880mA. I used it for months. I noticed my ...
1
vote
1answer
48 views

Can I charge my tablet with a plug that has different output voltage and current?

Can I charge my tablet with a plug that is for an old fashioned mobile phone? The plug has a different output voltage and output current.
0
votes
0answers
151 views

Booting when charging - how to do it, how to watch what programs run

We are trying to set up an Android 4.4.2 device to boot once it is plugged in to a power source. The device is a POSH Titan HD E500. We've come across different ways that each manufacturer handles ...
0
votes
1answer
189 views

Should I charge phone overnight or let battery down to a minimum?

For many times I found myself in a situation, that my battery charge was about 25-30% when I was going to sleep. Since I was always told to not let battery down below 20% (correct me, if that's wrong) ...
9
votes
5answers
4k views

Is there a quick-fix for the Galaxy Nexus when it signals “charging” without beeing connected via USB?

My Galaxy Nexus goes into charging mode but when it isn't plugged in. The battery symbol then indicates a charging and when in suspend mode, the display turns on which drains battery rapidly. I am ...
1
vote
1answer
683 views

Powered USB hub not charging phone. Kernel options?

I got a powered USB 2.0 hub (ET-UP900). As power source I am using the phones charger. But if I connect the hub with my phone (SM-C115) it does not charge. If I connect the charger directly it works. ...
2
votes
0answers
5k views

Auto boot when charger connected (for HTC Magic)

I want to let Android OS to boot automatically when the charger connected (for HTC Magic) without pressing power button I found this guide: Complete boot when charging If your phone only gets one ...
0
votes
0answers
26 views

decresing in power when charging

I have an HTC vivid 4g and anytime I insert its charger the phone will start decreasing instead of adding .Like say when the battery's 60% it will show a pop up that your phone is using morepower than ...
0
votes
0answers
36 views

Note 3 not charging after rebooting by itself

I was testing an app with the USB connected to PC and suddenly the phone rebooted itself and now it couldn't connect to the PC and cannot be charged even with the plug.
0
votes
1answer
504 views

Turning off Galaxy S4 while charging

I manually upgraded my Galaxy S4 to Kitkat; since it was rooted, upgrade couldn't be done automatically. It was successfully done but thereafter my phone turns on automatically whenever a charger is ...
0
votes
1answer
88 views

How can I have my device charge only when battery is below a given percentage?

So I've mounted my Nexus 7 onto a wall and use it as a sort of info screen / home automatisation device. Now this would require the screen to be on all the time which is why I want it to be connected ...
0
votes
0answers
9 views

Can I leave my note 2 charging? [duplicate]

The guy I bought my phone off of said there was a problem with the note 2, where i should not leave my phone plugged in all the time becuase the battery could overheat of whatever.. So I dont have it ...
4
votes
3answers
21k views

Samsung Galaxy S5 turns on when fully charged and never turns off

I just 'upgraded' from the Samsung Galaxy S4 to the S5. Both use similar 4.4.2 Touchwiz software, but by new one has some odd behavior. I'll explain. Notes: I set smart screen sleep (or timeout, how ...